Added DNS lookup using Google DNS, refactored IP code (#246 )

* Added DNS lookup using Google DNS, refactored IP code * fixed comments & cargo fmt * Fixed code review comments, added tests, removed unwrap() panics * Added assertion to test
Bump structopt from 0.3.17 to 0.3.18 (#243 )
2026-11-07 17:02:04 -10:00 · 2020-09-28 21:19:55 +01:00 · 2020-09-24 13:38:47 +01:00
5 changed files with 595 additions and 39 deletions
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+version = "0.19.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "365f4f7efd5f7ab30c143ad4172534077f32ccb16b1977d13e9259d2457744c2"
+dependencies = [
+ "futures",
+ "log",
+ "rustls",
+ "tokio",
+ "tokio-rustls",
+ "trust-dns-proto",
+ "webpki",
+]
+
+[[package]]
+name = "unicode-bidi"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
+dependencies = [
+ "matches",
+]
+
+[[package]]
+name = "unicode-normalization"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6fb19cf769fa8c6a80a162df694621ebeb4dafb606470b2b2fce0be40a98a977"
+dependencies = [
+ "tinyvec",
+]
+
 [[package]]
 name = "unicode-segmentation"
 version = "1.6.0"
@@ -995,6 +1416,23 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"

+[[package]]
+name = "untrusted"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
+
+[[package]]
+name = "url"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
+dependencies = [
+ "idna",
+ "matches",
+ "percent-encoding",
+]
+
 [[package]]
 name = "vec-arena"
 version = "1.0.0"
@@ -1101,6 +1539,25 @@ dependencies = [
 "wasm-bindgen",
 ]

+[[package]]
+name = "webpki"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab146130f5f790d45f82aeeb09e55a256573373ec64409fc19a6fb82fb1032ae"
+dependencies = [
+ "ring",
+ "untrusted",
+]
+
+[[package]]
+name = "webpki-roots"
+version = "0.19.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8eff4b7516a57307f9349c64bf34caa34b940b66fed4b2fb3136cb7386e5739"
+dependencies = [
+ "webpki",
+]
+
 [[package]]
 name = "wepoll-sys-stjepang"
 version = "1.0.6"
@@ -1110,6 +1567,18 @@ dependencies = [
 "cc",
 ]

+[[package]]
+name = "widestring"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a763e303c0e0f23b0da40888724762e802a8ffefbc22de4127ef42493c2ea68c"
+
+[[package]]
+name = "winapi"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -1120,6 +1589,12 @@ dependencies = [
 "winapi-x86_64-pc-windows-gnu",
 ]

+[[package]]
+name = "winapi-build"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
+
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
@@ -1132,7 +1607,7 @@ version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
 dependencies = [
- "winapi",
+ "winapi 0.3.9",
 ]

 [[package]]
@@ -1140,3 +1615,22 @@ name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "winreg"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2986deb581c4fe11b621998a5e53361efe6b48a151178d0cd9eeffa4dc6acc9"
+dependencies = [
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "ws2_32-sys"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
+dependencies = [
+ "winapi 0.2.8",
+ "winapi-build",
+]
@@ -18,7 +18,7 @@ exclude = [

 [dependencies]
 colored = "2.0.0"
-structopt = "0.3.17"
+structopt = "0.3.18"
 async-std = "1.6.4"
 futures = "0.3"
 rlimit = "0.4.0"
@@ -35,6 +35,7 @@ serde = "1.0.116"
 serde_derive = "1.0.116"
 cidr-utils = "0.5.0"
 itertools = "0.9.0"
+trust-dns-resolver = { version = "0.19.5", features = ["dns-over-rustls"] }

 [package.metadata.deb]
 depends = "$auto, nmap"
@@ -0,0 +1,6 @@
+127.0.0.1
+google.com
+example.com
+66666666666666.666666666666666666.66666666666666666.6666666666
+....
+e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.radiatorFixtures
@@ -26,8 +26,9 @@ use std::io::prelude::*;
 use std::io::BufReader;
 use std::net::ToSocketAddrs;
 use std::process::Command;
-use std::str::FromStr;
 use std::{net::IpAddr, time::Duration};
+use trust_dns_resolver::config::*;
+use trust_dns_resolver::Resolver;

 extern crate colorful;
 extern crate dirs;
@@ -208,9 +209,54 @@ fn build_nmap_arguments<'a>(
    arguments
 }

+/// Goes through all possible IP inputs (files or via argparsing)
+/// Parses the string(s) into IPs
+fn parse_addresses(opts: &Opts) -> Vec<IpAddr> {
+    let mut ips: Vec<IpAddr> = Vec::new();
+    let resolver = &Resolver::new(ResolverConfig::default(), ResolverOpts::default()).unwrap();
+
+    for ip_or_host in &opts.addresses {
+        match read_ips_from_file(ip_or_host.to_owned(), &resolver) {
+            Ok(x) => ips.extend(x),
+            _ => match parse_to_ip(ip_or_host.to_owned(), &resolver) {
+                Ok(x) => ips.extend(x),
+                _ => {
+                    warning!(
+                        format!("Host {:?} could not be resolved.", ip_or_host),
+                        opts.greppable,
+                        opts.accessible
+                    );
+                }
+            },
+        }
+    }
+    ips
+}
+
+/// Uses DNS to get the IPS assiocated with host
+fn resolve_ips_from_host(
+    source: &String,
+    resolver: &Resolver,
+) -> Result<Vec<IpAddr>, std::io::Error> {
+    let mut ips: Vec<std::net::IpAddr> = Vec::new();
+
+    match resolver.lookup_ip(&source) {
+        Ok(x) => {
+            for ip in x.iter() {
+                ips.push(ip);
+            }
+        }
+        _ => (),
+    };
+    return Ok(ips);
+}
+
 #[cfg(not(tarpaulin_include))]
 /// Parses an input file of IPs and uses those
-fn read_ips_from_file(ips: String) -> Result<Vec<std::net::IpAddr>, std::io::Error> {
+fn read_ips_from_file(
+    ips: String,
+    resolver: &Resolver,
+) -> Result<Vec<std::net::IpAddr>, std::io::Error> {
    // if we cannot open it as a file, it is not a file so move on
    let file = File::open(ips)?;
    let reader = BufReader::new(file);
@@ -218,37 +264,39 @@ fn read_ips_from_file(ips: String) -> Result<Vec<std::net::IpAddr>, std::io::Err
    let mut ips: Vec<std::net::IpAddr> = Vec::new();

    for str_ip in reader.lines() {
-        match IpAddr::from_str(&str_ip.unwrap()) {
-            Ok(x) => ips.push(x),
-            Err(y) => panic!("File does not contain valid IP address. Error at {}", y),
+        match str_ip {
+            Ok(x) => match parse_to_ip(x, resolver) {
+                Ok(result) => ips.extend(result),
+                Err(e) => {
+                    debug!("{} is not a valid IP or host", e);
+                }
+            },
+            Err(_) => {
+                debug!("Line in file is not valid");
+            }
        }
    }
    Ok(ips)
 }

-fn parse_addresses(opts: &Opts) -> Vec<IpAddr> {
+/// Given a string, parse it as an host, IP address, or CIDR.
+/// This allows us to pass files as hosts or cidr or IPs easily
+/// Call this everytime you have a possible IP_or_host
+fn parse_to_ip(address: String, resolver: &Resolver) -> Result<Vec<IpAddr>, std::io::Error> {
    let mut ips: Vec<IpAddr> = Vec::new();

-    for ip_or_host in &opts.addresses {
-        match IpCidr::from_str(ip_or_host) {
-            Ok(cidr) => cidr.iter().for_each(|ip| ips.push(ip)),
-            _ => match format!("{}:{}", &ip_or_host, 80).to_socket_addrs() {
-                Ok(mut iter) => ips.push(iter.nth(0).unwrap().ip()),
-                _ => match read_ips_from_file(ip_or_host.to_owned()) {
-                    Ok(x) => ips.extend(x),
-                    _ => {
-                        warning!(
-                            format!("Host {:?} could not be resolved.", ip_or_host),
-                            opts.greppable,
-                            opts.accessible
-                        );
-                    }
-                },
+    match IpCidr::from_str(&address) {
+        Ok(cidr) => cidr.iter().for_each(|ip| ips.push(ip)),
+        _ => match format!("{}:{}", &address, 80).to_socket_addrs() {
+            Ok(mut iter) => ips.push(iter.nth(0).unwrap().ip()),
+            _ => match resolve_ips_from_host(&address, resolver) {
+                Ok(hosts) => ips.extend(hosts),
+                _ => (),
            },
-        }
-    }
+        },
+    };

-    ips
+    Ok(ips)
 }

 fn adjust_ulimit_size(opts: &Opts) -> rlimit::rlim {
@@ -419,4 +467,12 @@ mod tests {

        assert_eq!(ips.is_empty(), true);
    }
+    #[test]
+    fn parse_hosts_file_and_incorrect_hosts() {
+        // Host file contains IP, Hosts, incorrect IPs, incorrect hosts
+        let mut opts = Opts::default();
+        opts.addresses = vec!["fixtures/hosts.txt".to_owned()];
+        let ips = parse_addresses(&opts);
+        assert_eq!(ips.len(), 3);
+    }
 }